CN2572718Y

CN2572718Y - Surface installed spring piece with drawing-resistant function

Info

Publication number: CN2572718Y
Application number: CN 02252053
Authority: CN
Inventors: 陈惟诚
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-30
Filing date: 2002-08-30
Publication date: 2003-09-10
Anticipated expiration: 2012-08-30

Abstract

The utility model relates to a surface installing elastic plate with a drawing resistant function, which comprises an installing section, an elastic arm section connected with the installing section, a contact connecting section connected with the elastic arm section, a first extending section connected with the contact connecting section and a second extending section connected with the installing section. The installing section is used for being welded on a circuit board to enable the first extending section to be provided with a first limiting part and an interference part. The second extending section forms a welding part and a second limiting part to enable the second extending section and the installing section to together form a limiting space limiting the movement of the interference part of the first extending section. The utility model has the effects of resisting a certain pulling force to prevent deformation, preventing excessive pressure to generate permanent deformation and a closing shape to reduce the mutual interference in the process of storage and transportation.

Description

The surface-mounted elastic sheet of tool tension effect

Technical field

The utility model relates to the surface-mounted elastic sheet of a kind of tool tension effect, particularly relates to a kind ofly being welded on circuit board in the mounted on surface mode, and as electrically or the miniature shell fragment that uses of Elastic Contact.

Background technology

The shell fragment that general electronics industry is used always is as metals such as material copper, be bent into again with the solid welding of mounted on surface (SMT) mode on circuit board, utilize the elastic force that is had after the metal material bending of shell fragment itself, contact use when electrically connecting with circuit board as other assembly, for example ground connection (Grounding) or electromagnetic protection (EMI, the binding of effect such as electro-magneticinterference), even can be used as the cushioning effect of contact.

Consult shown in Figure 1, it is a kind of existing shell fragment 3, the elastic arm section 32 that it has construction section 31, is upwards extended with an angle by an end of construction section 31, and by the connecting section 33 of elastic arm section 32 1 ends with the horizontal direction extension, make connecting section 33 and construction section 31 all with direction away from elastic arm section 32, extend towards the same side edge direction, so construction section 31, elastic arm section 32 and connecting section 33 are formed with an opening 34 jointly.

With circuit board (figure do not show) when being connected, be to be adsorbed on the connecting section 33 of shell fragment 3 with vacuum attraction equipment earlier, make shell fragment 3 move to specific location on the circuit board surface, again with the mode of mounted on surface (SMT) with construction section 31 solid weldings on the surface of circuit board, be about to vacuum attraction equipment after the solid welding and remove.And when using, the mutual butt of assembly that then utilizes connecting section 33 flexibly to link with desire.Its major defect is:

Because this kind shell fragment 3 is formed with the structure of opening 34, in the process that stores transportation, because of opening 34 directions do not have any obstruction, so the mutual fastener of regular meeting when 3 on shell fragment 3 and shell fragment forms meaningless interference blocking, make the work of freeing suitable require great effort time-consuming.

In addition; after shell fragment 3 is installed in circuit board; because of hitching with tether through regular meeting, the circuit board corner checks card; use for the quality management detection record; and in the process that circuit board moves; tether is because of rocking in the opening 34 that enters shell fragment 3 easily, so that pulls and cause the distortion of elastic arm section 32 or connecting section 33.

Again, when cause is moved circuit board or is put assembly, also may be because of colliding shell fragment 3 accidentally, cause shell fragment 3 is imposed a lateral thrust, and cause the lateral deformation of elastic arm section 32 or connecting section 33, make that the effective electrically connect between assembly and circuit board is destroyed, can't reach the predetermined anti-electromagnetic interference or the effect of ground connection.

On the other hand, if excessively the application of force is when lower compression connecting section 33, elastic arm section 32 may produce non-response plastic deformation stressed above after the range of linearity of Hooke's law, and along with distortion strengthens, producing the required stress of distortion will reduce gradually, so that cause shell fragment 3 to be damaged fully to vicious circle, so, appropriate shell fragment 3 has been installed in dismounting again, to be quite loaded down with trivial details difficult work, and also can therefore cause the raising of cost.

Summary of the invention

Main purpose of the present utility model provides the surface-mounted elastic sheet of a kind of tool tension effect, reaches the purpose of resisting pulling force to a certain degree and preventing to be out of shape.

Another purpose of the present utility model reaches the purpose that prevents excess pressure and produce permanent deformation at the surface-mounted elastic sheet that the effect of a kind of tool tension is provided.

A purpose more of the present utility model is at the surface-mounted elastic sheet that the effect of a kind of tool tension is provided, and reaches to be closed and to produce the purpose of interfering in the storage and transportation process each other to reduce.

The purpose of this utility model is achieved in that the surface-mounted elastic sheet of a kind of tool tension effect, it includes construction section, the elastic arm section that is connected with construction section, the connecting section that is connected with the elastic arm section, first extension that is connected with connecting section and second extension that is connected with construction section, it is characterized in that: this construction section contact also is welded on the circuit board, and this construction section is formed with opposite first end and the second end; This elastic arm section is connected the first end of this construction section and is an angle extends; This connecting section is connected phase the same side in the elastic arm section, the corresponding status of this construction section of this elastic arm Duan Bingyu; This first extension is connected this connecting section and extends toward this construction section direction, has first limiting section and interference part on this first extension; This second extension is connected the second end of this construction section and the space inner bending in the middle of this connecting section and this construction section is extended, this second extension be formed with the weld part that is connected on this circuit board and with this construction section fixed distance and with staggered second limiting section that wears of this first limiting section, this second extension and this construction section are construed as limiting the confined space that move this interference part jointly.

First limiting section of this first extension is perforation, and this interference part is a U-shaped portion.First limiting section of this first extension is the breach of two sunken insides, and this interference part is a T shape portion, and second limiting section of this second extension forms two fork ends.More be provided with the through hole that manifests this circuit board on this construction section, this welding position, second extension is in this through hole.

Major advantage of the present utility model is: because this first extension of definition and this mutual direction of closing in second extension are first direction, the direction of laterally vertical this first direction is a second direction; When this elastic arm section produces strain, this first limiting section and this second limiting section limit mutually, guide this connecting section in this first direction displacement, and limit its shift length, also limit the displacement of this connecting section in this second direction, the confined space that is constituted by this second extension and this construction section more limits the interference part of this first extension, this first extension and this second extension can't be broken away from mutually, and can resist external pull.

Describe in detail below in conjunction with preferred embodiment and accompanying drawing.

Description of drawings

Fig. 1 is the schematic perspective view of existing shell fragment;

Fig. 2 is a schematic perspective view of the present utility model;

Fig. 3 is the utility model side cross-sectional schematic;

Side schematic view when Fig. 4 is the utility model pressurized;

Fig. 5 is the schematic perspective view of shell fragment embodiment 1 of the present utility model.

Embodiment

Embodiment 1

Consult Fig. 2-shown in Figure 4, the surface-mounted elastic sheet 1 of tool tension of the present utility model effect be with the formed metalwork of impact style, it includes a construction section 11, an elastic arm section 12, a connecting section 13, one first extension 14, and one second extension 15.Shell fragment 1 is applied on the circuit board 2, and uses as electrical or Elastic Contact.

Construction section 11 are positions below and have certain area, its lower surface is in order to contact, and utilize the mode of mounted on surface (SMT) to be welded on circuit board 2, make construction section 11 opposite end respectively be formed with first end 111 and the second end 112, and more be provided with a through hole 113 on the construction section 11, when 11 of construction sections were on circuit board 2, therefore the circuit board 2 of through hole 113 belows partly can reveal.

Elastic arm section 12 is the first ends 111 that are connected construction section 11, and is extended upward with an angle of inclination by first end 111.

13 other ends that are connected elastic arm section 12 of connecting section, and extend to the side with parallel angle with construction section 11, make connecting section 13 and construction section 11 can corresponding status in the same side mutually of elastic arm section 12.

First extension 14 is the other ends that are connected connecting section 13, and be directed downwards extension to construction section 11, have first limiting section 141 and interference part 142 on first extension 14, in the present embodiment 1, first limiting section 141 is a perforation, and interference part 142 is position not holding to the formed U-shaped portion of the material between punch position in first extension 14 then.

15 of second extensions are connected the second end 112 of construction section 11, and in the space of the second end 112 in the middle of connecting section 13 and construction section 11, extend towards the bending of elastic arm section 12 directions, after making second extension 15 pass the perforation of first limiting section 141 of first extension 14 earlier, form second limiting section 151 that maintains the fixed intervals distance with construction section 11, oblique again extend one near construction section 11 and position weld part 152 in through hole 113, when construction section 11 is welded on the circuit board 2, weld part 152 can together be welded on the circuit board 2 with construction section 11 and fix, so, can constitute a confined space 150 jointly in the middle of second extension 15 and the construction section 11, and the interference part 142 of first extension 14 will be limited in activity in the confined space 150.

During application, because the interference part 142 of first extension 14 is limited in second extension 15 and the construction section 11 formed confined space 150, and the shaped design of interference part 142 is because can't pass through second limiting section 151, make by construction section 11, elastic arm section 12, connecting section 13, the shell fragment 1 that first extension 14 and second extension 15 are constituted can often keep the profile of a closed circular, therefore when transportation, 1 on adjacent shell fragment can not produce the interference of being entangled with mutually, the complicated processes that can not must when using, must free earlier as existing shell fragment, in addition, after shell fragment 1 is soldered to circuit board 2, profile because of its sealing, also can avoid on shell fragment 1, causing and pull as foreign object fasteners such as tethers, even and shell fragment 1 is when being subjected to a certain degree external force and pullling, because the interference part 142 of first extension 14 can't break away from the design of confined space 150, can therefore have the opposing pulling force, avoid first extension 14 to separate with second extension 15, and the effect of generation opening is more reliable on feasible the application.

Other cooperates Fig. 2 and shown in Figure 4; First extension 14 is Yu second extension 15 direction close to each other may be defined as first direction I; The direction of laterally vertical first direction I Ze is defined as second direction II; When connecting section 13 is subjected to the compressing of other Zu spare and when offseting downward along first direction I; Elastic arm section 12 will be along with producing strain; And the restriction that the rectangle perforation Zao of institute that passes through 141 formation of first limiting section becomes; Connecting section 13 can't Zai second direction II on Yun moving; And Zhi can be guided and follow first direction I and produce displacement

And for example shown in Figure 4, when connecting section 13 is continued to press down, will conflict with second limiting section 151 of second extension 15, distance control by 11 of second limiting section 151 and construction sections, can therefore limit connecting section 13 along the ultimate range of first direction I to bottom offset, so can avoid elastic arm section 12 to produce the chance of permanent deformation, to increase the reliability on using because of excessive pressurized.

Embodiment 2

As shown in Figure 5, preferred embodiment 2 of the present utility model, wherein, the part identical with embodiment 1 represented with identical numbering, and place first limiting section 141 in first extension 14 different with embodiment 1 is two breach that caved inward accordingly by the edge, 142 of interference parts are the formed T shape of a material portion between these breach to the first extension 14 ends, and the kenel of corresponding first limiting section 141,151 of second limiting sections of second extension 15 form two fork ends 1511, make fork end 1511 can extend through corresponding breach respectively, the not end of fork end 1511 then forms weld part 152, then be provided with the breach 114 that two power circuit boards 2 appear in addition on construction section 11, welding is fixing supplying corresponding weld part 152 contact circuit plates 2 for its purpose.Can similarly make

second extension

15 and 11 of construction sections constitute a confined space 150 by above-mentioned structure, make the interference part 141 of first extension 14 be limited in activity in the confined space 150, can reach connecting section 13 guidings identical and the effect of limiting displacement distance, also have simultaneously and prevent that to a certain degree first extension 14 from being pullled the resistant function that separates with second extension 15 with embodiment 1.

Claims

1, the surface-mounted elastic sheet of a kind of tool tension effect, it includes construction section, the elastic arm section that is connected with construction section, the connecting section that is connected with the elastic arm section, first extension that is connected with connecting section and second extension that is connected with construction section, it is characterized in that: this construction section contact also is welded on the circuit board, and this construction section is formed with opposite first end and the second end; This elastic arm section is connected the first end of this construction section and is an angle extends; This connecting section is connected phase the same side in the elastic arm section, the corresponding status of this construction section of this elastic arm Duan Bingyu; This first extension is connected this connecting section and extends toward this construction section direction, has first limiting section and interference part on this first extension; This second extension is connected the second end of this construction section and the space inner bending in the middle of this connecting section and this construction section is extended, this second extension be formed with the weld part that is connected on this circuit board and with this construction section fixed distance and with staggered second limiting section that wears of this first limiting section, this second extension and this construction section are construed as limiting the confined space that move this interference part jointly.

2, the surface-mounted elastic sheet of tool tension according to claim 1 effect is characterized in that: first limiting section of this first extension is perforation, and this interference part is a U-shaped portion.

3, the surface-mounted elastic sheet of tool tension according to claim 1 effect is characterized in that: first limiting section of this first extension is the breach of two sunken insides, and this interference part is a T shape portion, and second limiting section of this second extension forms two fork ends.

4, the surface-mounted elastic sheet of tool tension according to claim 1 effect is characterized in that: more be provided with the through hole that manifests this circuit board on this construction section, this welding position, second extension is in this through hole.